The present invention provides a hinge module for a foldable device. A first curved guiding portion and a second curved guiding portion are provided between two sides of a curved body, and a first connecting portion of a first rotating member is connected with a first support plate. At least one of the first curved blocks of the first rotating member is swingable and limited within the first curved guiding portion. A second connecting portion of a second rotating member is connected with a second support plate. At least one of the second curved blocks of the second rotating member is swingable and limited within the second curved guiding portion. A first linkage assembly has one end pivotally connected with one side of the first curved block. A second linking member is provided at another end of the two linkage assemblies.